Initial commit

.config/lite-xl/libraries/widget/keybinddialog.lua

@@ -0,0 +1,257 @@
+--
+-- KeyBinding Dialog Widget.
+-- @copyright Jefferson Gonzalez
+-- @license MIT
+--
+
+local keymap = require "core.keymap"
+local style = require "core.style"
+local Button = require "libraries.widget.button"
+local Dialog = require "libraries.widget.dialog"
+local Label = require "libraries.widget.label"
+local Line = require "libraries.widget.line"
+local ListBox = require "libraries.widget.listbox"
+local MessageBox = require "libraries.widget.messagebox"
+
+---@type widget.keybinddialog
+local current_dialog = nil
+
+---@class widget.keybinddialog : widget.dialog
+---@field super widget.dialog
+---@field selected integer
+---@field shortcuts widget.listbox
+---@field add widget.button
+---@field remove widget.button
+---@field line widget.line
+---@field message widget.label
+---@field binding widget.label
+---@field mouse_intercept widget.label
+---@field save widget.button
+---@field reset widget.button
+---@field cancel widget.button
+local KeybindDialog = Dialog:extend()
+
+---Constructor
+function KeybindDialog:new()
+  KeybindDialog.super.new(self, "Keybinding Selector")
+
+  self.type_name = "widget.keybinddialog"
+
+  self.selected = nil
+
+  local this = self
+
+  self.shortcuts = ListBox(self.panel)
+  self.shortcuts:set_size(100, 100)
+  function self.shortcuts:on_row_click(idx, data)
+    this.selected = idx
+  end
+
+  self.add = Button(self.panel, "Add")
+  self.add:set_icon("B")
+  function self.add:on_click()
+    this.shortcuts:add_row({"none"})
+    this.shortcuts:set_selected(#this.shortcuts.rows)
+    this.shortcuts:set_visible_rows()
+    this.selected = #this.shortcuts.rows
+  end
+
+  self.remove = Button(self.panel, "Remove")
+  self.remove:set_icon("C")
+  function self.remove:on_click()
+    local selected = this.shortcuts:get_selected()
+    if selected then
+      this.shortcuts:remove_row(selected)
+      this.shortcuts:set_selected(nil)
+      this.selected = nil
+    else
+      MessageBox.error("No shortcut selected", "Please select an shortcut to remove")
+    end
+  end
+
+  self.line = Line(self.panel)
+
+  self.message = Label(self.panel, "Press a key combination to change selected")
+
+  self.mouse_intercept = Label(self.panel, "Grab mouse events here")
+  self.mouse_intercept.border.width = 1
+  self.mouse_intercept.clickable = true
+  self.mouse_intercept:set_size(100, 100)
+  function self.mouse_intercept:on_mouse_pressed(button, x, y, clicks)
+    keymap.on_mouse_pressed(button, x, y, clicks)
+    return true
+  end
+  function self.mouse_intercept:on_mouse_wheel(y)
+    keymap.on_mouse_wheel(y)
+    return true
+  end
+  function self.mouse_intercept:on_mouse_enter(...)
+    Label.super.on_mouse_enter(self, ...)
+    self.border.color = style.caret
+  end
+  function self.mouse_intercept:on_mouse_leave(...)
+    Label.super.on_mouse_leave(self, ...)
+    self.border.color = style.text
+  end
+
+  self.save = Button(self.panel, "Save")
+  self.save:set_icon("S")
+  function self.save:on_click()
+    this:on_save(this:get_bindings())
+    this:on_close()
+  end
+
+  self.reset = Button(self.panel, "Reset")
+  function self.reset:on_click()
+    this:on_reset()
+    this:on_close()
+  end
+
+  self.cancel = Button(self.panel, "Cancel")
+  self.cancel:set_icon("C")
+  function self.cancel:on_click()
+    this:on_close()
+  end
+end
+
+---@param bindings table<integer, string>
+function KeybindDialog:set_bindings(bindings)
+  self.shortcuts:clear()
+  for _, binding in ipairs(bindings) do
+    self.shortcuts:add_row({binding})
+  end
+  if #bindings > 0 then
+    self.shortcuts:set_selected(1)
+    self.selected = 1
+  end
+  self.shortcuts:set_visible_rows()
+end
+
+---@return table<integer, string>
+function KeybindDialog:get_bindings()
+  local bindings = {}
+  for idx=1, #self.shortcuts.rows, 1 do
+    table.insert(bindings, self.shortcuts:get_row_text(idx))
+  end
+  return bindings
+end
+
+---Show the dialog and enable key interceptions
+function KeybindDialog:show()
+  current_dialog = self
+  KeybindDialog.super.show(self)
+end
+
+---Hide the dialog and disable key interceptions
+function KeybindDialog:hide()
+  current_dialog = nil
+  KeybindDialog.super.hide(self)
+end
+
+---Called when the user clicks on save
+---@param bindings string
+function KeybindDialog:on_save(bindings) end
+
+---Called when the user clicks on reset
+function KeybindDialog:on_reset() end
+
+function KeybindDialog:update()
+  if not KeybindDialog.super.update(self) then return false end
+
+  self.shortcuts:set_position(style.padding.x/2, 0)
+
+  self.add:set_position(
+    style.padding.x/2,
+    self.shortcuts:get_bottom() + style.padding.y
+  )
+
+  self.remove:set_position(
+    self.add:get_right() + (style.padding.x/2),
+    self.shortcuts:get_bottom() + style.padding.y
+  )
+
+  self.line:set_position(
+    0,
+    self.remove:get_bottom() + style.padding.y
+  )
+
+  self.message:set_position(
+    style.padding.x/2,
+    self.line:get_bottom() + style.padding.y
+  )
+  self.mouse_intercept:set_position(
+    style.padding.x/2,
+    self.message:get_bottom() + style.padding.y
+  )
+
+  self.save:set_position(
+    style.padding.x/2,
+    self.mouse_intercept:get_bottom() + style.padding.y
+  )
+  self.reset:set_position(
+    self.save:get_right() + style.padding.x,
+    self.mouse_intercept:get_bottom() + style.padding.y
+  )
+  self.cancel:set_position(
+    self.reset:get_right() + style.padding.x,
+    self.mouse_intercept:get_bottom() + style.padding.y
+  )
+
+  self.panel.size.x = self.panel:get_real_width() + style.padding.x
+  self.panel.size.y = self.panel:get_real_height()
+  self.size.x = self:get_real_width() - (style.padding.x / 2)
+  self.size.y = self:get_real_height() + (style.padding.y / 2)
+
+  self.shortcuts:set_size(self.size.x - style.padding.x)
+
+  self.line:set_width(self.size.x - style.padding.x)
+
+  self.mouse_intercept:set_size(self.size.x - style.padding.x)
+
+  return true
+end
+
+--------------------------------------------------------------------------------
+-- Intercept keymap events
+--------------------------------------------------------------------------------
+
+-- Same declarations as in core.keymap because modkey_map is not public
+local macos = PLATFORM == "Mac OS X"
+local modkeys_os = require("core.modkeys-" .. (macos and "macos" or "generic"))
+local modkey_map = modkeys_os.map
+local modkeys = modkeys_os.keys
+
+---Copied from core.keymap because it is not public
+local function key_to_stroke(k)
+  local stroke = ""
+  for _, mk in ipairs(modkeys) do
+    if keymap.modkeys[mk] then
+      stroke = stroke .. mk .. "+"
+    end
+  end
+  return stroke .. k
+end
+
+local keymap_on_key_pressed = keymap.on_key_pressed
+function keymap.on_key_pressed(k, ...)
+  if current_dialog and current_dialog.selected then
+    local mk = modkey_map[k]
+    if mk then
+      keymap.modkeys[mk] = true
+      -- work-around for windows where `altgr` is treated as `ctrl+alt`
+      if mk == "altgr" then
+        keymap.modkeys["ctrl"] = false
+      end
+      current_dialog.shortcuts:set_row(current_dialog.selected, {key_to_stroke("")})
+    else
+      current_dialog.shortcuts:set_row(current_dialog.selected, {key_to_stroke(k)})
+    end
+    return true
+  else
+    return keymap_on_key_pressed(k, ...)
+  end
+end
+
+
+return KeybindDialog
+